Energy Division
DA1 Series, (IEC)
Distribution metal oxide surge arrester
Bowthorpe EMP pioneered the development of polymeric composite
housed surge arresters in the early
1980's and since then have a proven
service experience across the globe,
operating in the worlds toughest
environments.
Bowthorpe EMP "DA" silicone surge
arresters have been designed and
tested to meet our customers demands
with reliability and offering superior
operational performance. The DA
development was based on 30 years
of internal experience in arrester design
and manufacture within the Tyco
Electronics Energy Division.
Bowthorpe EMP surge arresters
provide active over voltage protection
that contributes directly to improved
reliability of your system, reducing
lost minutes
The manufacturing process ensures
void free construction and optimal
sealing. This is achieved by bonding the
silicone housing directly to the internal
core and corrosion resistant aluminium
fittings using a Bowthorpe EMP
proprietary bonding solution.
Bowthorpe EMP DA1 benefits:
• Tested in accordance with
IEC60099-4 at independent
accredited laboratories
• Direct moulded housing to prevent
moisture ingress
• Low residual voltages
• High-energy handling
• Safe non-shattering short circuit
behavior to higher current levels
• Maintenance free
• Hydrophobic silicone housing:
(Tracking and erosion resistant)
• Excellent cantilever and tensile
performance
• Quality design and manufacturing,
ISO 9001 compliant
Bowthorpe EMP DA1 Surge Arrester
Generic technical data:
DA1 series
Class and nominal discharge current (8/20µs):
Operating duty impulse withstand current (4/10µs):
Long duration current impulse (2000µs):
High current short circuit: (pre-failing method)
Energy
Cantilever (Nm)
Tension (N)
Torque (Nm)
Sealing:
All arrester cores are encapsulated in silicone insulating housing.
A permanent chemical bond connects the arrester core and the
non-tracking silicone housing. This invisible interface prevents
moisture from entering during severe thermal fluctuations due
to normal climatic and energy absorption events.
4 - 36 kV
Class 1, 10 kA
100 kA
325 A
21 kA
5.6 kJ/kV
350Nm
2000N
50Nm
Birdcap
Polymer housing:
Non-tracking and hydrophobic silicone insulating material is
used for DA arrester housings. The DA series is available with
standard or extra creepage distance. The housing material has
proven performance in long term TERT and UV aging tests
and proven resistance to flammability.
Aluminium fittings
Integrated design:
Bowthorpe EMP integrates all components in a single piece.
There are no glued interfaces. The design is void and gap free
ensuring peak performance under the harshest conditions.
The arresters' virtual void-free construction eliminates
moisture vapor transmission.
Reliable and consistent GLD
Tyco Electronics’ robust ground lead disconnect, (GLD) offers
operational reliability and consistency. It was designed to
operate in event of arrester failure, removing earth connection
and fault from line. It can be shipped and stored restriction
free.
Silicone rubber
housing
Mould in Place
ZnO varistors
Glass filled
epoxy
laminate
Quality:
The DA1 series arrester is manufactured in ISO accredited
Tyco Electronics production facilities.
Bracket GLD
Earth clamp
All of the above information, including drawings, illustrations and graphic designs, reflects our present understanding and is to the best of our knowledge and belief correct and
reliable. Users, however, should independently evaluate the suitability of each product for the desired application. Under no circumstances does this constitute an assurance of any
particular quality or performance. Such an assurance is only provided in the context of our product specifications or explicit contractual arrangements. Our liability for these
products is set forth in our standard terms and conditions of sale. Bowthorpe EMP, TE Logo and Tyco Electronics are trademarks.
Energy Division – innovative and economical solutions for the electrical power industry: cable accessories, connectors &
fittings, insulators & insulation, surge arresters, switching equipment, lighting controls, Power Measurement and Control.
MV Product Management, Tyco Electronics
100-104 Shannon Industrial Estate
Shannon, Co. Clare, Ireland
E:mail: surgearresters@tycoelectronics.com
http://energy.tycoelectronics.com
© Tyco Electronics EPP 1507 B 12/07
Safe mode of failure:
Our high energy arresters are tested in accordance with the
pre-failing mode of failure test in IEC 60099-4, 2006.
This testing has proven the DA1 series safe and predictable
failure characteristics.